LU(w/o STI)-54
Oil Level Switch
LUBRICATION
13.Oil Level Switch
A: REMOVAL
1. WHEN REMOVING FRONT CROSSMEMBER
1) Remove the front crossmember. <Ref. to FS-22, REMOVAL, Front Crossmember.>
2) Remove clip (A) from the oil pan upper, and remove the oil level switch.
2. WHEN NOT REMOVING FRONT CROSSMEMBER
1) Remove the striker - front hood. <Ref. to EB-11, DISASSEMBLY, Front Hood.>
2) Fully open the front hood. <Ref. to NT-20, FRONT HOOD DAMPER STAY, NOTE, Note.>
3) Remove the collector cover.
(1) Remove the clips (A).
(2) Hold the shaded area (B) by hand and carefully pull the RH side (C) upward.
(3) Hold the shaded area (D) by hand and carefully pull the LH side (E) upward.
4) Disconnect the ground terminal from battery sensor. <Ref. to NT-5, BATTERY, NOTE, Note.>
5) Remove the air intake duct. <Ref. to IN(w/o STI)-22, REMOVAL, Air Intake Duct.>
LU-02912
(A)
EX-03204
(A)
(B)
(C)
(E)
(D)
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LU(w/o STI)-55
Oil Level Switch
LUBRICATION
6) Remove the clips (A) and (B) which secure the engine harness and bulkhead harness to the bracket, and
remove the bolt which secures the engine control module (ECM) to the bracket.
7) Pull out the engine control module (ECM) from the bracket, and move it to a location that does not interfere
operation.
NOTE:
When performing the pulling out operation, pay attention not to apply excessive load to the breather filter por-
tion (a) in order to avoid the damage.
8) Drain the engine oil. <Ref. to LU(w/o STI)-11, REPLACEMENT, Engine Oil.>
9) Remove the front exhaust pipe. <Ref. to EX(w/o STI)-9, REMOVAL, Front Exhaust Pipe.>
IN-03579
(B)
(A)
IN-03580
(a)
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LU(w/o STI)-56
Oil Level Switch
LUBRICATION
10) Disconnect the oil level switch connector from the engine harness, and remove the clip (A) securing the
harness.
11) Remove the nuts which secure the engine mounting to the front crossmember.
12) Remove the electric power steering gearbox. <Ref. to PS-56, REMOVAL, Electric Power Steering Gear-
box.>
13) Remove the front drive shaft LH. <Ref. to DS-48, REMOVAL, Front Drive Shaft.>
14) Lower the vehicle.
15) Remove the intercooler. <Ref. to IN(w/o STI)-38, REMOVAL, Intercooler.>
16) Disconnect the connector (A) from the brake vacuum pump.
LU-03067
(A)
ME-07228
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LU(w/o STI)-57
Oil Level Switch
LUBRICATION
17) Disconnect connector (B) and terminal (C) from the generator, and remove the clip (D) securing the gen-
erator cord to the intake manifold.
18) Disconnect connector (A) from A/C compressor, and remove the generator cord from clip (B).
19) Remove the clip (C) securing the generator cord to the fuel pipe protector, and move the generator cord
to the left side wheel apron.
(D)
(C)
(B)
(A)
ME-07908
ME-07918
(B)
(A)
(C)
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LU(w/o STI)-58
Oil Level Switch
LUBRICATION
20) Remove the pitching stopper.
21) Lift up the vehicle.
22) Set the transmission jack to the transmission. (CVT model)
NOTE:
Be careful that the support plate of transmission jack does not touch the transmission oil pan.
23) Remove the rear crossmember and attach the ST. (CVT model)
ST 41099YC001 ST REAR MOUNT
Tightening torque:
T1: 35 N·m (3.6 kgf-m, 25.8 ft-lb)
T2: 70 N·m (7.1 kgf-m, 51.6 ft-lb)
24) Remove the transmission jack. (CVT model)
25) Lower the vehicle.
26) Remove the bolt (A) securing the transmission harness stay to the CVT. (CVT model)
NOTE:
This procedure is required to prevent the transmission connector from touching the A/C pressure hose during
engine lift-up.
ME-07877
ME-07912
ST
T2
T1
T2
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LU(w/o STI)-59
Oil Level Switch
LUBRICATION
27) Remove the air breather hose from the clip (B), and then remove the clip (B) from the pitching stopper
bracket. (CVT model)
NOTE:
This procedure is required to prevent the clip from touching the A/C pressure hose during engine lift-up.
28) Lift up the engine with a lifting device and wire ropes.
CAUTION:
When lifting up the engine, pay attention to the clearance of each part and be careful not to lift the en-
gine too much, in order to prevent damaging the vehicle.
ME-07914
(B)
(A)
ME-05105
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LU(w/o STI)-60
Oil Level Switch
LUBRICATION
29) Remove the engine mounting LH from the engine.
30) Remove clip (A) from the oil pan upper, and remove the oil level switch.
(A) Front side (B) Rear side
LU-03084
(A) (B)
LU-02912
(A)
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LU(w/o STI)-61
Oil Level Switch
LUBRICATION
B: INSTALLATION
1. WHEN FRONT CROSSMEMBER HAS BEEN REMOVED
1) Install the oil level switch and the clip (A) to the oil pan upper.
NOTE:
Use new O-rings.
Apply a coat of engine oil to the O-rings.
Tightening torque:
6.4 N·m (0.7 kgf-m, 4.7 ft-lb)
2) Install the front crossmember. <Ref. to FS-26, INSTALLATION, Front Crossmember.>
LU-02912
(A)
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LU(w/o STI)-62
Oil Level Switch
LUBRICATION
2. WHEN FRONT CROSSMEMBER HAS NOT BEEN REMOVED
1) Install the oil level switch and the clip (A) to the oil pan upper.
NOTE:
Use new O-rings.
Apply a coat of engine oil to the O-rings.
Tightening torque:
6.4 N·m (0.7 kgf-m, 4.7 ft-lb)
2) Install the engine mounting LH onto the engine.
Tightening torque:
35 N·m (3.6 kgf-m, 25.8 ft-lb)
(A) Front side (B) Rear side
LU-02912
(A)
LU-03084
(A) (B)
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LU(w/o STI)-63
Oil Level Switch
LUBRICATION
3) Lower the engine and remove the lifting device and wire ropes.
4) Install the clip (B) to the pitching stopper bracket, and then install the air breather hose to the clip (B). (CVT
model)
5) Install the bolt (A) which secures the transmission harness stay to the CVT. (CVT model)
Tightening torque:
15 N·m (1.6 kgf-m, 11.8 ft-lb)
6) Lift up the vehicle.
7) Set the transmission jack to the transmission. (CVT model)
NOTE:
Be careful that the support plate of transmission jack does not touch the transmission oil pan.
ME-05105
ME-07914
(B)
(A)
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LU(w/o STI)-64
Oil Level Switch
LUBRICATION
8) Remove the ST and install the rear crossmember. (CVT model)
ST 41099YC001 ST REAR MOUNT
Tightening torque:
T1: 18 N·m (1.8 kgf-m, 13.3 ft-lb)
T2: 35 N·m (3.6 kgf-m, 25.8 ft-lb)
T3: 70 N·m (7.1 kgf-m, 51.6 ft-lb)
9) Remove the transmission jack. (CVT model)
10) Lower the vehicle.
11) Install the pitching stopper.
Tightening torque:
T1: 50 N·m (5.1 kgf-m, 36.9 ft-lb)
T2: 58 N·m (5.9 kgf-m, 42.8 ft-lb)
12) Set the generator cord, and fix the generator cord to the fuel pipe protector using clip (C).
ME-07916
T3
T1
ST
T2
T3
ME-07917
T2
T1
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LU(w/o STI)-65
Oil Level Switch
LUBRICATION
13) Install the generator cord to clip (B), and connect the connector (A) to A/C compressor.
14) Using clip (D), fix the generator cord to the generator cord stay, and connect the connector (B) and the
terminal (C) to the generator.
Tightening torque:
15 N·m (1.5 kgf-m, 11.1 ft-lb)
15) Connect the connector (A) to the brake vacuum pump.
16) Install the intercooler. <Ref. to IN(w/o STI)-41, INSTALLATION, Intercooler.>
17) Lift up the vehicle.
18) Install the electric power steering gearbox. <Ref. to PS-58, INSTALLATION, Electric Power Steering
Gearbox.>
19) Install the front drive shaft LH. <Ref. to DS-49, INSTALLATION, Front Drive Shaft.>
ME-07918
(B)
(A)
(C)
(D)
(C)
(B)
(A)
ME-07908
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LU(w/o STI)-66
Oil Level Switch
LUBRICATION
20) Install the nuts which hold the engine mounting to the crossmember.
NOTE:
Use a new nut.
Make sure that locators (a) of the engine mounting are securely inserted.
Tightening torque:
60 N·m (6.1 kgf-m, 44.3 ft-lb)
21) Connect the connector of oil level switch to the engine harness, and install the clip (A) securing the har-
ness.
22) Install the front exhaust pipe. <Ref. to EX(w/o STI)-19, INSTALLATION, Front Exhaust Pipe.>
ME-08112
(a)
(a)
LU-03067
(A)
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LU(w/o STI)-67
Oil Level Switch
LUBRICATION
23) Insert the engine control module (ECM) to the bracket.
24) Install the bolt which secures the engine control module (ECM) to the bracket, and then secure the en-
gine harness and bulkhead harness to the bracket with clips (A) and (B).
Tightening torque:
7.5 N·m (0.8 kgf-m, 5.5 ft-lb)
25) Install the air intake duct. <Ref. to IN(w/o STI)-22, INSTALLATION, Air Intake Duct.>
26) Connect the ground terminal to battery sensor. <Ref. to NT-5, BATTERY, NOTE, Note.>
27) Install the collector cover.
28) Refill the engine oil. <Ref. to LU(w/o STI)-11, REPLACEMENT, Engine Oil.>
29) Fill engine coolant. <Ref. to CO(w/o STI)-14, FILLING OF ENGINE COOLANT, REPLACEMENT, En-
gine Coolant.>
30) Set the front hood to the normal position. <Ref. to NT-20, FRONT HOOD DAMPER STAY, NOTE, Note.>
31) Install the striker - front hood. <Ref. to EB-15, ASSEMBLY, Front Hood.>
32) Close the front hood.
FU-08492
IN-03579
(B)
(A)
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LU(w/o STI)-68
Oil Level Switch
LUBRICATION
C: WIRING DIAGRAM
Engine electrical system <Ref. to WI-162, WIRING DIAGRAM, Engine Electrical System.>
CAN communication system <Ref. to WI-110, WIRING DIAGRAM, CAN Communication System.>
9
10
44
E158
B134
1
E130
TFT
i10
3
3
23
83
B134
2625 2827 3029 3231 34
33
1413 1615 1817 2019 22
21
3837 4039 4241 4443 46
45
21
4987
6
5
3
4847
3635
2423
1211
10
E158
3837
40
39
2625
28
27
1413
16
15
21
4
3
4241
44
46
45
43
3029
32
34
33
31
18
4847
3635
24
17
20
22
21
19
6
1211
23
5
8
10
9
7
i10
11 12
9
10
7856341
2
15 1613 14 19
18
20
21 23222426
25
27 28 29 30 31 32 33 34 35 36 37 38 39 40
17
LU-03190
ECM
OIL LEVEL SWITCH
CAN TRANSCEIVER & RECEIVER
MICRO COMPUTER
COMBINATION
METER
REF. TO GND
[e]
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LU(w/o STI)-69
Oil Level Switch
LUBRICATION
D: INSPECTION
1. INSPECTION WHEN LOW ENGINE OIL WARNING LIGHT ILLUMINATES ON LCD
Step Check Yes No
1 CHECK ENGINE OIL LEVEL. Is engine oil level normal? Go to step 2. Replace engine oil
or refill, and check
again while the oil
level is normal con-
dition. <Ref. to
LU(w/o STI)-11,
REPLACEMENT,
Engine Oil.>
To disable the low
engine oil warning,
install the spare
fuse at the delivery
mode fuse in the
main fuse box.
Then turn the igni-
tion switch to ON
(engine off) again,
to confirm the low
engine oil warning
is not displayed.
Remove the spare
fuse installed to fin-
ish.
NOTE:
The engine oil level
switch is normal if
the low engine oil
level warning is not
displayed with the
delivery mode fuse
inserted.
2 CHECK LAN SYSTEM. Has a DTC of the LAN system
been input?
Perform the diag-
nosis according to
DTC.
Go to step 3.
3 CHECK OIL LEVEL SWITCH CIRCUIT.
1) Turn the ignition switch to ON (engine OFF).
2) Read the current data for engine in the Sub-
aru Select Monitor to confirm the item for “Oil
level switch”. <Ref. to EN(w/o STI)(diag)-37,
DISPLAY CURRENT ENGINE DATA, OPERA-
TION, Subaru Select Monitor.>
Is the “Oil level switch” signal
displayed in Subaru Select
Monitor HIGH?
To disable the low
engine oil warning,
install the spare
fuse at the delivery
mode fuse in the
main fuse box.
Then turn the igni-
tion switch to ON
(engine off) again,
to confirm the low
engine oil warning
is not displayed.
Remove the spare
fuse installed to fin-
ish.
NOTE:
The engine oil level
switch is normal if
the low engine oil
level warning is not
displayed with the
delivery mode fuse
inserted.
Go to step 4.
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LU(w/o STI)-70
Oil Level Switch
LUBRICATION
4 CHECK COMBINATION METER.
Perform the self-diagnosis of combination
meter to check if there are any faults in the com-
bination meter. <Ref. to IDI-6, OPERATION,
Combination Meter System.>
Is combination meter OK? Go to step 5. Replace the com-
bination meter.
<Ref. to IDI-13,
REMOVAL, Com-
bination Meter.>
5 CHECK SECURE CONNECTION OF CON-
NECTOR BETWEEN ENGINE HARNESS
AND OIL LEVEL SWITCH.
Is there any insecure connec-
tion?
Repair the connec-
tion condition.
Then, to disable
the low engine oil
warning display,
install the spare
fuse at the delivery
mode fuse in the
main fuse box.
Then turn the igni-
tion switch to ON
(engine OFF)
again to confirm
the low engine oil
warning is not dis-
played. Remove
the spare fuse
installed to finish.
NOTE:
The engine oil level
switch is normal if
the low engine oil
level warning is not
displayed with the
delivery mode fuse
inserted.
Go to step 6.
6 CHECK OIL LEVEL SWITCH.
1) Deliberately short circuits by connecting the
engine harness connector terminal and chassis
ground.
2) Turn the ignition switch to ON (engine OFF).
3) Read the current data for engine in the Sub-
aru Select Monitor to confirm the item for “Oil
level switch”. <Ref. to EN(w/o STI)(diag)-37,
DISPLAY CURRENT ENGINE DATA, OPERA-
TION, Subaru Select Monitor.>
Connector & terminal
(E130) No. 1 — Chassis ground:
Is the “Oil level switch” signal
displayed in Subaru Select
Monitor HIGH?
Replace the oil
level switch. <Ref.
to LU(w/o STI)-54,
REMOVAL, Oil
Level Switch.>
Go to step 7.
Step Check Yes No
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LU(w/o STI)-71
Oil Level Switch
LUBRICATION
2. OTHER INSPECTIONS
1) Check that the oil level switch does not have deformation, cracks, or damage.
2) Check the oil level switch installation part for oil leakage and oil seepage.
7 CHECK SECURE CONNECTION OF CON-
NECTOR BETWEEN ENGINE CONTROL
MODULE (ECM) AND ENGINE HARNESS.
Is there any insecure connec-
tion?
Repair the connec-
tion condition.
Then, to disable
the low engine oil
warning display,
install the spare
fuse at the delivery
mode fuse in the
main fuse box.
Then turn the igni-
tion switch to ON
(engine OFF)
again to confirm
the low engine oil
warning is not dis-
played. Remove
the spare fuse
installed to finish.
NOTE:
The engine oil level
switch is normal if
the low engine oil
level warning is not
displayed with the
delivery mode fuse
inserted.
Go to step 8.
8 CHECK ENGINE HARNESS.
1) Disconnect the engine control module
(ECM) side connector.
2) Set the ST between the engine control mod-
ule (ECM) and engine harness. <Ref. to EN(w/o
STI)(diag)-6, CAUTION, General Description.>
3) Disconnect the connector between the
engine harness and the oil level switch.
4) Measure the resistance between connector
terminals.
Connector & terminal
(B158) No. 44 — (B130) No. 1:
Is the resistance less than 1 Ω? Replace the
engine control
module (ECM).
<Ref. to FU(w/o
STI)-132,
REMOVAL, Engine
Control Module
(ECM).>
Repair or replace
the open circuit of
engine harness.
Step Check Yes No
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